High power multilayer module having low inductance and fast switching for paralleling power devices
a multi-layer module and paralleling power technology, applied in the direction of casings/cabinets/drawers, instruments, casings/cabinets/drawers, etc., can solve the problems of voltage overshoot and ringing, limiting the practical implementation of these devices in current technologies, and reducing stability
Active Publication Date: 2019-02-19
WOLFSPEED INC
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Benefits of technology
The patent describes a power module system that includes a power substrate, housing, terminals, and power devices. The system has a first terminal with a contact surface located above the housing, a second terminal with a different elevation than the first terminal, and a third terminal connected to the power substrate. The power devices are connected to the power substrate. The system also has planar buss bars that are arranged to reduce impedance and facilitate current flow. The technical effect of this patent is to provide a power module system with improved performance and reliability.
Problems solved by technology
Parasitic impedances in the power module, however, limit the practical implementation of these devices in current technologies.
Specifically, the loop inductance during switching events can result in a voltage overshoot and ringing.
This reduces stability, increases switching losses, creates Electromagnetic Interference (EMI), and stresses system components.
Method used
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[0046]The aspects of the disclosure and the various features and advantageous details thereof are explained more fully with reference to the non-limiting aspects and examples that are described and / or illustrated in the accompanying drawings and detailed in the following description. It should be noted that the features illustrated in the drawings are not necessarily drawn to scale, and features of one aspect may be employed with other aspects as the skilled artisan would recognize, even if not explicitly stated herein. Descriptions of well-known components and processing techniques may be omitted so as to not unnecessarily obscure the aspects of the disclosure. The examples used herein are intended merely to facilitate an understanding of ways in which the disclosure may be practiced and to further enable those of skill in the art to practice the aspects of the disclosure. Accordingly, the examples and aspects herein should not be construed as limiting the scope of the disclosure, ...
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The disclosure is directed to a power module that includes at least one power substrate, a housing arranged on the at least one power substrate, and a first terminal electrically connected to the at least one power substrate. The first terminal includes a contact surface located above the housing at a first elevation. The power module includes a second terminal including a contact surface located above the housing at a second elevation different from the first elevation, a third terminal electrically connected to the at least one power substrate, and a plurality of power devices electrically connected to the at least one power substrate.
Description
BACKGROUND OF THE DISCLOSURE1. Field of the Disclosure[0001]This disclosure is directed to a high power multilayer module having low inductance and fast switching for paralleling power devices. Moreover, the disclosure is directed to a process of configuring a high power multilayer module having low inductance and fast switching for paralleling power devices.2. Related Art[0002]As will be appreciated by those skilled in the art, power modules are known in various forms. Power modules provide a physical containment for power components, usually power semiconductor devices. These power semiconductors are typically soldered or sintered on a power electronic substrate. The power module typically carries the power semiconductors, provides electrical and thermal contact, and includes electrical insulation.[0003]Parasitic impedances in the power module, however, limit the practical implementation of these devices in current technologies. Specifically, the loop inductance during switching e...
Claims
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IPC IPC(8): H02M3/158H05K7/14H02M7/00H02M7/537H05K5/00H05K5/02
CPCH05K7/1432H02M3/158H02M7/003H02M7/537H05K5/0069H05K5/0247H01L2224/48472H01L2224/48091H01L2224/48247H01L2924/00014H01L25/072H01L25/18H01L2224/0603H01L2224/49111H01L2924/19107H01L2224/49113H05K7/14329H01L24/49
InventorMCPHERSON, BRICELOSTETTER, ALEXANDER
OwnerWOLFSPEED INC